Finding the Fourth Proportional to 89,304.42, 133,956.66 and 42,415.14

Step by Step Solution

1. Step 1: Write the proportion equation
   89,304.42 : 133,956.66 = 42,415.14 : x
2. Step 2: Convert to fraction form
   89,304.42/133,956.66 = 42,415.14/x
3. Step 3: Cross multiply
   89,304.42x = 133,956.66 × 42,415.14
4. Step 4: Simplify right side
   89,304.42x = 5,681,790,487.83
5. Step 5: Solve for x
   x = 5,681,790,487.83/89,304.42
6. Step 6: Final answer
   x = 63,622.72